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https://www.um.edu.mt/library/oar/handle/123456789/59003| Title: | Experience with short-period, small gap undulators at the SwissFEL aramis beamline |
| Authors: | Schmidt, Thomas J. Calvi, Marco Kittel, Christoph Voulot, Didier Hiller, Nicole Schietinger, Thomas Prat-Costa, E. Bettoni, Simona Reiche, Sven Ferrari, Eugenio Aiba, Masamitsu Ganter, Romain Löhl, F. Alarcon, Arturo Wagner, Ulrich H. Follath, Rolf Juranic, Pavle N. Arrell, Christopher A. Scherrer, Paul Cassar, Ariana Sammut, Nicholas |
| Keywords: | X-rays Photons Permanent magnets Germanium compounds X-ray lasers Free electron lasers |
| Issue Date: | 2019 |
| Publisher: | JACoW |
| Citation: | Schmidt, T., Aiba, M., Alarcon, A., Arrell, C., Bettoni, S., Calvi, M., ... & Hiller, N. (2019, November). Experience with short-period, small gap undulators at the SwissFEL Aramis beamline. In 39th Free Electron Laser Conf.(FEL'19), Hamburg, Germany, 26-30 August 2019 (pp. 564-568). JACOW Publishing, Geneva, Switzerland. |
| Abstract: | The SwissFEL Aramis beamline provides hard X-ray FEL radiation down to 1 Angström with 5.8 GeV and short period, 15mm, in-vacuum undulators (U15). To reach the maximum designed K-value of 1.8 the U15s have to be operated with vacuum gaps down to 3.0 mm. The thirteen-undulator modules are 4m long and each of them is equipped with a pair of permanent magnet quadrupoles at the two ends, aligned magnetically to the undulator axis. Optical systems and dedicated photon diagnostics are used to check the alignment and improve the K-value calibration. In this talk the main steps of the undulator commissioning will be recalled and a systematic comparison between the magnetic results and the electron and photon based measurements will be reported to highlight achievements and open issues. |
| URI: | https://www.um.edu.mt/library/oar/handle/123456789/59003 |
| Appears in Collections: | Scholarly Works - FacICTMN |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Experience_with_short_period_small_gap_undulators_at_the_SwissFEL_aramis_beamline.pdf | 9.48 MB | Adobe PDF | View/Open |
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